Reliance Communications — [protected]instrument not working

I have been a subscriber of reliance land line wireless phone for last more than 3 years. From last 6 months, I have been facing problem of disconnectivity of phone at first intance for incoming calls. Whnever i picked up the phone to attend the call, it gets disconnected in first intance or if i am able to talk, it gets disconnected after 2-3 minute everytime. I loadged complains for more than 5-6 times for the same but every time either telecaller tries to finish the complain justifying that we are not educated enough to operate that instrument or if it all registered, it is justified by saying it is because of poor net work and they are working on it.